Booster shots hitch: Some may miss the Sept. 20 start

FILE - In this April 13, 2021, file photo White House COVID-19 Response Coordinator Jeff Zients speaks during a press briefing at the White House in Washington. President Joe Biden’s plans to start delivering booster shots by Sept. 20 for most Americans who received the COVID-19 vaccines are facing new complications that could delay the availability for those who received the Moderna vaccine. Dr. Janet Woodcock, the acting FDA commissioner, and CDC Director Dr. Rochelle Walensky, briefed Zients and other officials about the expected Moderna delay on Thursday, Sept. 2, officials said.